The Ultimate Treasure

The seers of Gelsandor foretell the coming of many visitors to their planet, all in search of the lost treasure of the fabulously wealthy Rovan Cartovall, who vanished 5000 years ago... An innocent shopping jaunt for the Fifth Doctor and Peri ends in violence and incarceration as they become caught up in a mysterious transaction involving the sale of co-ordinates leading to Rovan's hoard—the ultimate treasure.